Cruise Report: 2023-06-26 : 06-28

Pot survey

Author

Mike O’Brien (UMCES)

General notes

Three release cages were used in this survey: sites C2306_2-2, N11, and L10, respectively.

Participants

  • Dave Secor (UMCES)
  • Kirsten Silva (UMCES)
  • Evan Kostelecky
  • Capt. Brendan Harrington (F/V Integrity)
  • Reilly (F/V Integrity mate, 27 June)
  • Connor (F/V Integrity mate, 28 June)

Pot deployment cruise, 2023-06-27

Overall

  • 03:00 Meet at F/V Integrity, prepare for departure.
  • 03:30 Depart dock, transit to C2306_2-1 (control site).
  • 06:04 Arrive at C2306_2-1.
    • 06:06 Begin deploying pots.
    • 06:10 Finish deploying pots, transit to C2306_2-2 (control site).
  • 06:53 Arrive at C2306_2-2.
    • 06:57 Begin deploying pots; release cage E36D included.
    • 07:01 Finish deploying pots, transit to O11 (experimental turbine site).
  • 07:47 Arrive at O11.
    • 07:48 Begin deploying pots.
    • 07:52 Finish deploying pots, transit to N11.
  • 08:00 Arrive at N11.
    • 08:02 Begin deploying pots; release cage E335 included.
    • 08:06 Finish deploying pots. Transit to RTWB.
  • 08:16 Arrive at RTWB.
    • Take pictures and video. Transit to L10 (experimental turbine site).
  • 08:25 Arrive at L10.
    • 08:27 Begin deploying pots; release cage BCB included.
    • 08:31 Finish deploying pots, transit to K08 (experimental turbine site).
  • 08:49 Arrive at K08.
    • 08:51 Begin deploying pots.
    • 08:55 Finish deploying pots. Return to West Ocean City, MD.
  • c12:30 Arrive in West Ocean City, MD.

Description

Survey deployment

Capt. Brendan Harrington and mates retrieved the pots from the Maryland Coastal Bays program and stacked the pots on the boat.

Wind speed was10-15 knots, coming from the N. Waves were 3-5 ft. Cloud cover was 60-80% of the sky. Surface temperature as reported by the satellite chart plotter was 70-72 F. Control sites ranged in depth from 93-133 ft, with turbine sites ranging from 87-116 ft.

Onset HOBO temperature loggers were attached to the ropeless cages and deployed at a control (C2306_2-2) and turbine (K08) site to log bottom temperature at 10 minute intervals during deployment.

Pot recovery cruise, 2023-06-28

Overall

  • 02:30 Meet at F/V Integrity, prepare for departure.
  • c02:50 Depart dock, transit to C2306_2-1.
  • 05:14 Arrive at C2306_2-1.
    • 05:20 Near block recovered.
    • 05:30 Far block recovered; pot recovery complete. Transit to C2306_2-2.
  • 06:24 Arrive C2306_2-2. Begin pot recovery approach.
    • 06:24 Near block recovered.
    • 06:36 Far block (release cage) recovered; pot recovery complete. Transit to O11.
  • 07:22 Arrive O11. Begin pot recovery approach.
    • 07:22 Near block recovered.
    • 07:30 Far block recovered; pot recovery complete. Transit to N11.
  • 07:44 Arrive N11. Begin pot recovery approach.
    • 07:52 Near block recovered.
    • 08:02 Far block (release cage) recovered; pot recovery complete. Transit to L10.
  • 08:55 Arrive L10. Begin pot recovery approach.
    • 08:57 Near block recovered.
    • 09:06 Far block (release cage) recovered; pot recovery complete. Transit to K08.
  • 09:25 Arrive K08. Begin pot recovery approach.
    • 09:28 Near block recovered.
    • 09:36 Far block recovered; pot recovery complete.
  • 09:36 End survey, return to West Ocean City, MD.
  • 12:30 Arrive in West Ocean City, MD.

Description

Wind speed was 10 knots from the N as reported by Capt. Harrington. Waves were 3 feet. Cloud cover was 30% of the sky, decreasing to 10% at the end of the survey. Surface temperature as reported by the satellite chart plotter was 71-72 F.

HOBO temperature loggers were successfully recovered from the rigs at C2306_2-2 and K08.

Dominant species were black sea bass (39) and Jonah crab (20). 38 of the 89 recovered pots were empty.

There was a significant difference in black sea bass catch between near and far sections of the lines (Poisson GLM, \(p <\) 0.05), but no difference between turbine and control sites (Poisson GLM, \(p >\) 0.05).

Total length (mm) and weight (g) of all black sea bass were recorded. Total lengths of other fish species were also recorded. Black sea bass ranged in total length from 195 - 570 mm, with a mean of 261 mm (minimum legal size 320 mm). Weights ranged from 70 - 570 g, mean of 211 g.

Black sea bass were significantly larger and heavier in the far pots as compared to near and turbine sites as compared to control sited (ANOVA, all \(p <\) 0.05).

Catch and size data summaries are shown in the sample summary section below.

Station information

datetime depth wind_speed wind_dir wave_height cloud_cover_10th ropeless_id surf_temp_f lon_start lat_start lon_end lat_end notes participants
deploy
C2306_2-1 2023-06-27 06:06:50 92.9 45214.0 N 45021.0 8.0 NA 72.2 −74.75792 38.21139 −74.75664 38.21311 NA DS, KS, EK, BH, Rm
C2306_2-2 2023-06-27 06:57:26 133.0 45214.0 N 44989.0 8.0 E36D 70.7 −74.64059 38.20347 −74.63944 38.20542 NA DS, KS, EK, BH, Rm
O11 2023-06-27 07:48:29 116.0 45214.0 N 44989.0 8.0 NA 70.5 −74.64807 38.28582 −74.64661 38.28763 NA DS, KS, EK, BH, Rm
N11 2023-06-27 08:02:49 110.0 45214.0 N 44989.0 6.0 E335 70.7 −74.66486 38.28611 −74.66284 38.28769 NA DS, KS, EK, BH, Rm
L10 2023-06-27 08:27:27 87.9 45214.0 N 44989.0 6.0 BCB 70.7 −74.69461 38.30269 −74.69268 38.30445 NA DS, KS, EK, BH, Rm
K08 2023-06-27 08:51:22 96.2 45214.0 N 44989.0 6.0 NA 70.7 −74.70482 38.33668 −74.70192 38.33852 HOBO attached to pot 37. DS, KS, EK, BH, Rm
recover
C2306_2-1 2023-06-28 05:20:13 NA 45214.0 N 44989.0 6.0 NA 72.2 −74.75754 38.21108 −74.75745 38.21108 NA DS, KS, EK, BH, Rm, Em, Cm
C2306_2-2 2023-06-28 06:24:10 NA NA NA NA NA E36D NA −74.64057 38.20307 −74.64014 38.20377 NA DS, KS, EK, BH, Rm, Em, Cm
O11 2023-06-28 07:22:52 NA 10.0 N 3.0 3.0 NA 71.5 −74.64805 38.28558 −74.64737 38.28636 NA DS, KS, EK, BH, Rm, Em, Cm
N11 2023-06-28 07:52:54 NA 10.0 N 3.0 2.0 E335 71.5 −74.66491 38.28585 −74.66401 38.28694 NA DS, KS, EK, BH, Rm, Em, Cm
L10 2023-06-28 08:57:59 NA 10.0 N 3.0 1.0 BCB 71.5 −74.69466 38.30249 −74.69317 38.30400 NA DS, KS, EK, BH, Rm, Em, Cm
K08 2023-06-28 09:28:11 NA 10.0 N 3.0 1.0 NA 72.2 −74.70436 38.33673 −74.70289 38.33805 HOBO attached to pot 37. DS, KS, EK, BH, Rm, Em, Cm

Bottom temperature

Cruise map

Sample summary

Catch

Black sea bass catch
N min average med max sd retained
June - 2022 - Control
far 18 0 1.0 1 2 0.77 33
near 10 0 1.4 1 5 1.81 25
June - 2022 - Project
far 6 0 0.3 0 2 0.58 42
near 5 0 0.4 0 2 0.65 42
July - 2022 - Control
far 18 0 1.2 0 6 1.93 8
near 11 0 0.9 1 3 1.08 6
July - 2022 - Project
far 13 0 0.5 0 3 0.70 12
near 4 0 0.2 0 1 0.43 3
August - 2022 - Control
far 112 0 3.3 1 21 5.24 20
near 71 0 3.0 1 18 5.03 16
August - 2022 - Project
far 36 0 0.5 0 5 0.96 24
near 35 0 0.7 0 8 1.53 21
April - 2023 - Control
far 14 0 0.8 0 4 1.26 8
near 3 0 0.2 0 3 0.87 3
April - 2023 - Project
far 29 0 0.7 0 5 1.23 18
near 29 0 1.2 0 7 2.15 13
May - 2023 - Control
far 12 0 0.7 0 3 0.91 10
near 15 0 1.2 1 3 0.87 10
May - 2023 - Project
far 79 0 2.2 2 7 1.82 20
near 40 0 1.7 2 4 1.24 20
June - 2023 - Control
far 101 0 2.7 1 14 3.78 33
near 42 0 1.8 0 12 3.30 25
June - 2023 - Project
far 226 0 3.0 1 21 4.13 42
near 184 0 3.8 1 18 4.66 42

Late-June 2023 catch

The blank bars on the right show the count of pots with no catch.

Fish measurements

Total length (mm)

Weight (g)

Sex